<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主题区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollaps ? '64px':'200px' ">    
        <div class="toggle-button" @click="toggleCollapse">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened 
        :collapse="isCollaps"  :collapse-transition="false" router :default-active="activePath">
      
          <!-- 一级菜单 -->
          <el-submenu :key="item.id" :index="item.id + '' " v-for="item in Menulist">
            <!-- 一级菜单模板区 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data(){
return{
  //左侧菜单数据
  Menulist:[],
  iconsObj:{
    125:'el-icon-s-custom',
    103:'el-icon-coin',
    101:'el-icon-shopping-bag-1',
    102:'el-icon-tickets',
    145:'el-icon-monitor'
  },
  //是否折叠
  isCollaps:false,
  //被激活的动态地址
  activePath:'',
  
}
  },
  created() {
    this.getMenuList(),
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    //点击按钮，切换菜单的折叠与展开
    toggleCollapse(){
         this.isCollaps = !this.isCollaps
    },
    //保存链接的激活状态
    saveNavState(activePath){
       window.sessionStorage.setItem('activePath',activePath)
       this.activePath =activePath
    },
    //获取所有的菜单
    async getMenuList() {
    const {data:res} = await this.$http.get('menus')
    // console.log(res);
    if(res.meta.status !==200) return this.$message.console.error(res.meta.msg);
    this.Menulist=res.data
    
    }
  }
}
</script>

<style  scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
}
div {
  display: flex;
  align-items: center;
}
span {
  margin-left: 15px;
}
.el-aside {
  background-color: #333744;
}
.el-main {
  background-color: #eaedf1;
}
.el-menu {
  border-right: none;
}
.toggle-button {
  background-color: #4a5064;
  text-align: center;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
